Loom for weaving pile fabric.



No. 823,698. PATENTED JUNE 19, 1906. A..G. & J. H. ROBERTSON. L'OOM FOR WEAVING PILE FABRIO.

APPLICATION FILED MAY 31. 1905.

2 SHEETS-SHEET l.

WZZneJseJI R 1'0 w ll whom it mal yroncern:

PATENT EEIOE.

ANDREW e. ROBERTSON, or PHILADELPHIA, AND JOHN H. ROBERTSON,

OFOHELTENHAM, PENNSYLVANIA; SAID JOHN H. ROBERTSON AS- SIGNOR TO" SAID ANDREW G. ROBERTSON.

1.00M FOR 'w Avme. FILE, FABRIC.

' Application filed May, 31,1905.- Serial mam.

Be it known'that we, ANDREW G, ROBERT- SON, residing at Philadelphia, in the county of Philadelphia,and JOHNTH. ROBERTSON, of Oheltenham, in the county oi'Mont'gomery, State of Pennsylvania, citizens of the United States, have invented certain new anduseful Improvements in Looms for Weaving, Pile Fabric, of which the follpwing is a specification. e relates to improvements in The object of our 1nvent1on is to make certain improvements in the construction of; the mechanism for formingthe pile, so thatsaid mechanism will-perform its function more ef'- ficiently than heretofore, and to simplify the 1 construction of the parts.

range the parts so that therejwill -be sufficient I A further object-of ourinvention is to arroomb'etweenthe same to allow. the free movement of the warp-threads to prevent crowding.--

A still further ob'ect of our invention is to construct the parts in such a manner that the pile-threads will be positively carried over the pile-wires, and thus avoid the liability of the pile-threads resting. on top of the pilewires or splitting over-the'same and damaging the said pile-threads. l

A still further object of our invention is to give a slight movementto the pile-wires having knives thereon to insure the saidknives cutting the pile-loops. Referring to the drawings, Figure, 1' is a longitudinal sectional view of a portion of a loom, illustrating our invention. Fig. 2 is a transverse sectional view on line 2 2, Fig. 1. Fig. 3 is a partial view similar to Fig. 2, showing the parts in a diiierent position Fig. 4 is a view similar to Fig. 3, showing the parts in the reversed position. of the pile-Wire'detached.

In the drawings, A represents the usual warp-beam, carrying the binder warp-threads A, and a the heddle-frame for the same. The pile warp-threads are shown at B, controlled by the jacquard?) and the harness b; The above threads all pass through the reed C,

carried by the rock-shaft O, and then over the breast-beam D.

Specification of Letters 2mm.

Fig. 2.

Fig. 5 is a side view ratented' June '19, 1,906.

ness 1) is. a row of upright guide-blades E, se cured attheir lower ends in across bar or frame e,' which is stationary, and at the top? they are secured in-a cross-bar e,'adapted to receive altransverse reciprocatingmotion by 'means of the crank e and rock-shaft 6 Fig. 2, suitably connected to the driving mechan' ism of the loom, which isnot shown.

Between each upright guide-blade E is a (More clearly shown in'Fig. 5.)

-}The said pile-wire has a supporting-arm f which is held in an upright position by being 1 secured in across-bar G, pivoted in bearings ilocatedat either side'of ,the loem, as shown Said cross-bar G. is: given 'a slight 70.

.rocking movement bybeing connected to the rock-shaft C", carrying the lay C This Located immediatelyinfront of the harip'ile-wire F, having a knife f formed, on its outer-end. 5

movement of the crossbar willgive sufiicient" 'movement to. the knives f *to cause them to readily cut the pile-loops as they; are formed over the pile-wires and forced alongthe same by the reed. This movement'of the. pilewires, however, is not sufficient to move the loops f 2 of the pile wires beyond the width of the upright guide-blades E.

The warp-threads A and the-pile-threads B pass throughthe spaces between the upright guide-bladesE and normally remain at the lower portion of said spaces to form the bottom of the shed. The warp-threads A are not raised above the pile-wires, as shown by the warp-thread A, which is in the raised;

position to form the top of the shed.

= I Whenit is. desired to make a loop over thepile-wire, the pile warp-thread B is raised by the jacquard to a position shown by the pilethread B the upright guide-blade E will carry the pile-thread over the pile-wire F, and

when the position shown in Fig. 3 is reached the pile-thread will be dropped by the jacquard to the space on the opposite side of the pile-wire. A pick is thrown across the loom to secure the pile-thread. The reed then carries the loop into its pro er place upon the pile-wire. The same pi e-thread isthen raised again by the jac uard and dro ped when the upright guidelades are in t e position shown in Fig. 4, forming another loop over the pile-wire and bringing the pile-thread back to its original place, and a, i

At a point on the upright guide-blades E' adjacent the loops f 2 of the pile-wires are proj ections E, over which the pile-threads must 1o ride, so that when the upright guide-blades are bearing against the pile-wires the pilethreads in their downward movement will leave the upright guide-blades and pass down on the proper side of the pile-wires. I There are projections E on either side of 5 the upright guide-blades E, so that upon the return of the pile-threads and the reverse movement of the upright guide-blades said projections u on the latter will insure the pile-threads being directed over the pilewires into their original places on the other side of the pile-wires.

By having the pile-wires supported on a separate cross-bar from that supporting the upright guide-blades a free space is left between the said upright guide-blades for the .warp-threads to pass through and the liability of the threads crowding between the upright guide'blades is thus avoided. This 3o feature is of great advantage, as a great num ber of upright guide-blades are required in a L loom in actual practice, which necessitates them being placed very closely together.

I Having thus described our invention, we

claim and desire to secure by Letters Patent i 1. In a loom for weaving pile fabrics, the

combination of a series of upright guideblades, a pile-wire projecting from between each of said upright guide-blades, a stationary bar for securing one end of said upright guideblades and a reciprocating bar for securing the opposite ends of said upright guideblades, substantially as described.

5 2. In a'loom'for weaving pile fabrics the combination of a series of upright guideblades, a pile-wire having a portion thereof located between each of said upright guideblades, a stationary bar holding the lower ends of said u )right guide-blades, a recipro- 5o eating bar holding the upper ends of said upright guide-blades and means for reci )rocating said last-mentioned bar, substantially as described.

3. In a loom for weaving pile fabrics, the combination of a series of u )right guideblades, a pile-wire projecting etween each. of the same, means for bringing said upright guide-blades in contact with each of said pile-wires, and a projection formed on. either side of said upright guide-blades at points adjacent said pile-wires whereby a thread may be guided over said pile-wire, substantially as described.

4. In a loom for weaving pile fabrics, the combination of a series of upright guideblades, a series of pile-wires located in front of said series of upright guide-blades, each of said pile-wires having a loop extending between each of said upright guide-blades and means for bringing said upright guide-blades in contact with either side of the loop of the pile-wires, substantially as described.

5. In a loom for weaving pile fabrics, the combination of a series of upright guideblades, pile-wires having loops at their rear ends adapted to enter the s aces formed between the upright guide-bla es, a supportingarm for each of said pile-wires, and a crossbar in which said sup ".orting-arms are secured located in a di 'erent vertical plane from said upright guideblades, substanti ally as described.

6. In a loom for weaving pile fabrics, the combination of a series of u )right guideblades, a pile-wire having a lmife thereon and located between each of said unight guide-blades, arms forming part of sai pilewires, a cross-bar in which said arms of the pile-wires are secured, and means for rocking said cross-bar, substantially as described.

In testimony whereof we afiix our signatures in presence of two witnesses.

ANDREW G. ROBERTSON. JOHN H. ROBERTSON Witnesses:

C. RIDGWAY BRIGGS, EDWARD MILLER. 

